package com.sky.service.impl;

import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

/**
 * Created with IntelliJ IDEA.
 *
 * @Author: HuoXu
 * @Date: 2023/08/18/19:34
 * @Description: 快乐跳跳虎
 */
@Service
@Slf4j
public class UserServiceImpl implements UserService {

    //获取appid和secret
    @Autowired
    private WeChatProperties weChatProperties;
    //通过openid查询该用户是否为新用户
    @Autowired
    private UserMapper userMapper;
    //微信服务接口地址
    public static final String URL="https://api.weixin.qq.com/sns/jscode2session";

    /**
     * 微信登录
     * @param userLoginDTO
     * @return
     */
    @Override
    public User userLogin(UserLoginDTO userLoginDTO) {
        //调用微信接口服务,获得微信用户的openid
        Map<String, String> map=new HashMap<>();
        map.put("appid",weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("js_code", userLoginDTO.getCode());
        map.put("grant_type", "authorization_code");
        String json = HttpClientUtil.doGet(URL, map);
        JSONObject jsonObject = JSONObject.parseObject(json);
        String openid=jsonObject.getString("openid");
        //判断openid是否为空，如果为空则登陆失败，抛出异常
        if(openid==null){
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }
        //判断当前用户是否为客户端的新用户
        User user=userMapper.queryByOpenid(openid);
        //如果是新用户则自动完成注册
        if(user==null){
            user=User.builder()
                    .openid(openid)
                    .createTime(LocalDateTime.now())
                    .build();
            userMapper.addUser(user);
        }
        //返回用户对象
        return user;
    }
}
